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v3.24.1

Property and Casualty Insurance Activity (Details) - USD ($) | 12 Months Ended
--- | ---
Dec. 31, 2023 | Dec. 31, 2022
Change in unearned premiums [Member] |  |
Assumed | $ 0 | $ 0
Ceeded | 18,902,507 | 2,057,880
Net | 20,773,746 | (7,675,290)
Direct | 1,871,239 | (9,733,170)
Premiums earned [Member] |  |
Assumed | 0 | 0
Ceeded | (87,661,478) | (77,137,136)
Net | 114,384,263 | 114,384,531
Direct | 202,045,741 | 191,521,667
Premiums written Member |  |
Assumed | 0 | 0
Ceeded | (106,563,985) | (79,195,016)
Net | 93,610,517 | 122,059,821
Direct | $ 200,174,502 | $ 201,254,837

X
- References No definition available. + Details
Name: | kins_AssumedPropertyAndCasultyInsuranceActivity
Namespace Prefix: | kins_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- References No definition available. + Details
Name: | kins_CededPropertyAndCasultyInsuranceActivity
Namespace Prefix: | kins_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- References No definition available. + Details
Name: | kins_DirectPropertyAndCasultyInsuranceActivity
Namespace Prefix: | kins_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- References No definition available. + Details
Name: | kins_NetPropertyAndCasultyInsuranceActivity
Namespace Prefix: | kins_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Details
Name: | us-gaap_PropertyPlantAndEquipmentByTypeAxis=kins_ChangeinunearnedpremiumsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_PropertyPlantAndEquipmentByTypeAxis=kins_PremiumsearnedMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_TitleOfIndividualAxis=kins_PremiumswrittenMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |